diff --git a/dist/bundle.js b/dist/bundle.js
index b5e65039cb..ba5fe11d8b 100644
--- a/dist/bundle.js
+++ b/dist/bundle.js
@@ -23901,7 +23901,7 @@ BI.CardLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i, item) {
             if (item) {
                 if (!self.hasWidget(item.cardName)) {
-                    var w = BI.createWidget(item, this);
+                    var w = BI.createWidget(item, self);
                     w.on(BI.Events.DESTROY, function () {
                         var index = BI.findIndex(o.items, function (i, tItem) {
                             return tItem.cardName == item.cardName;
@@ -24490,7 +24490,7 @@ BI.GridLayout = BI.inherit(BI.Layout, {
     },
 
     stroke: function (items) {
-        var o = this.options;
+        var self = this, o = this.options;
         var rows = o.rows || o.items.length, columns = o.columns || ((o.items[0] && o.items[0].length) | 0);
         var width = 100 / columns, height = 100 / rows;
         var els = [];
@@ -24537,11 +24537,11 @@ BI.GridLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i, item) {
             if (BI.isArray(item)) {
                 BI.each(item, function (j, el) {
-                    els[i][j] = BI.createWidget(el, this);
+                    els[i][j] = BI.createWidget(el, self);
                 });
                 return;
             }
-            els[item.row][item.column] = BI.createWidget(item, this);
+            els[item.row][item.column] = BI.createWidget(item, self);
         });
         for (var i = 0; i < rows; i++) {
             for (var j = 0; j < columns; j++) {
@@ -24997,7 +24997,7 @@ BI.HTapeLayout = BI.inherit(BI.Layout, {
         items = BI.compact(items);
         BI.each(items, function (i, item) {
             if (!self.hasWidget(self.getName() + i + "")) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 self.addWidget(self.getName() + i + "", w);
             } else {
                 w = self.getWidgetByName(self.getName() + i + "");
@@ -25102,7 +25102,7 @@ BI.VTapeLayout = BI.inherit(BI.Layout, {
         items = BI.compact(items);
         BI.each(items, function (i, item) {
             if (!self.hasWidget(self.getName() + i + "")) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 self.addWidget(self.getName() + i + "", w);
             } else {
                 w = self.getWidgetByName(self.getName() + i + "");
@@ -25598,12 +25598,12 @@ BI.CenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -25667,7 +25667,7 @@ BI.FloatCenterLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i) {
             var widget = BI.createWidget({
                 type: "bi.default"
-            }, this);
+            }, self);
             widget.element.addClass("center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")).css({
                 width: width + "%",
                 height: "100%"
@@ -25678,7 +25678,7 @@ BI.FloatCenterLayout = BI.inherit(BI.Layout, {
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -25735,7 +25735,7 @@ BI.HorizontalCenterLayout = BI.inherit(BI.Layout, {
     },
 
     stroke: function (items) {
-        var o = this.options;
+        var self = this, o = this.options;
         var list = [];
         BI.each(items, function (i) {
             list.push({
@@ -25744,12 +25744,12 @@ BI.HorizontalCenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -25816,12 +25816,12 @@ BI.VerticalCenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -76077,9 +76077,6 @@ BI.IconTextTrigger = BI.inherit(BI.Trigger, {
             textAlign: "left",
             height: o.height,
             text: o.text,
-            title: function () {
-                return o.text;
-            },
             hgap: c.hgap
         });
         this.trigerButton = BI.createWidget({
diff --git a/dist/case.js b/dist/case.js
index 24619c83cc..126f393aa2 100644
--- a/dist/case.js
+++ b/dist/case.js
@@ -13740,9 +13740,6 @@ BI.IconTextTrigger = BI.inherit(BI.Trigger, {
             textAlign: "left",
             height: o.height,
             text: o.text,
-            title: function () {
-                return o.text;
-            },
             hgap: c.hgap
         });
         this.trigerButton = BI.createWidget({
diff --git a/dist/core.js b/dist/core.js
index 2c020859bb..ac0acaa920 100644
--- a/dist/core.js
+++ b/dist/core.js
@@ -23901,7 +23901,7 @@ BI.CardLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i, item) {
             if (item) {
                 if (!self.hasWidget(item.cardName)) {
-                    var w = BI.createWidget(item, this);
+                    var w = BI.createWidget(item, self);
                     w.on(BI.Events.DESTROY, function () {
                         var index = BI.findIndex(o.items, function (i, tItem) {
                             return tItem.cardName == item.cardName;
@@ -24490,7 +24490,7 @@ BI.GridLayout = BI.inherit(BI.Layout, {
     },
 
     stroke: function (items) {
-        var o = this.options;
+        var self = this, o = this.options;
         var rows = o.rows || o.items.length, columns = o.columns || ((o.items[0] && o.items[0].length) | 0);
         var width = 100 / columns, height = 100 / rows;
         var els = [];
@@ -24537,11 +24537,11 @@ BI.GridLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i, item) {
             if (BI.isArray(item)) {
                 BI.each(item, function (j, el) {
-                    els[i][j] = BI.createWidget(el, this);
+                    els[i][j] = BI.createWidget(el, self);
                 });
                 return;
             }
-            els[item.row][item.column] = BI.createWidget(item, this);
+            els[item.row][item.column] = BI.createWidget(item, self);
         });
         for (var i = 0; i < rows; i++) {
             for (var j = 0; j < columns; j++) {
@@ -24997,7 +24997,7 @@ BI.HTapeLayout = BI.inherit(BI.Layout, {
         items = BI.compact(items);
         BI.each(items, function (i, item) {
             if (!self.hasWidget(self.getName() + i + "")) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 self.addWidget(self.getName() + i + "", w);
             } else {
                 w = self.getWidgetByName(self.getName() + i + "");
@@ -25102,7 +25102,7 @@ BI.VTapeLayout = BI.inherit(BI.Layout, {
         items = BI.compact(items);
         BI.each(items, function (i, item) {
             if (!self.hasWidget(self.getName() + i + "")) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 self.addWidget(self.getName() + i + "", w);
             } else {
                 w = self.getWidgetByName(self.getName() + i + "");
@@ -25598,12 +25598,12 @@ BI.CenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -25667,7 +25667,7 @@ BI.FloatCenterLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i) {
             var widget = BI.createWidget({
                 type: "bi.default"
-            }, this);
+            }, self);
             widget.element.addClass("center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")).css({
                 width: width + "%",
                 height: "100%"
@@ -25678,7 +25678,7 @@ BI.FloatCenterLayout = BI.inherit(BI.Layout, {
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -25735,7 +25735,7 @@ BI.HorizontalCenterLayout = BI.inherit(BI.Layout, {
     },
 
     stroke: function (items) {
-        var o = this.options;
+        var self = this, o = this.options;
         var list = [];
         BI.each(items, function (i) {
             list.push({
@@ -25744,12 +25744,12 @@ BI.HorizontalCenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -25816,12 +25816,12 @@ BI.VerticalCenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
diff --git a/dist/fineui.js b/dist/fineui.js
index 7fb26ed531..714b3f9028 100644
--- a/dist/fineui.js
+++ b/dist/fineui.js
@@ -24074,7 +24074,7 @@ BI.CardLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i, item) {
             if (item) {
                 if (!self.hasWidget(item.cardName)) {
-                    var w = BI.createWidget(item, this);
+                    var w = BI.createWidget(item, self);
                     w.on(BI.Events.DESTROY, function () {
                         var index = BI.findIndex(o.items, function (i, tItem) {
                             return tItem.cardName == item.cardName;
@@ -24663,7 +24663,7 @@ BI.GridLayout = BI.inherit(BI.Layout, {
     },
 
     stroke: function (items) {
-        var o = this.options;
+        var self = this, o = this.options;
         var rows = o.rows || o.items.length, columns = o.columns || ((o.items[0] && o.items[0].length) | 0);
         var width = 100 / columns, height = 100 / rows;
         var els = [];
@@ -24710,11 +24710,11 @@ BI.GridLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i, item) {
             if (BI.isArray(item)) {
                 BI.each(item, function (j, el) {
-                    els[i][j] = BI.createWidget(el, this);
+                    els[i][j] = BI.createWidget(el, self);
                 });
                 return;
             }
-            els[item.row][item.column] = BI.createWidget(item, this);
+            els[item.row][item.column] = BI.createWidget(item, self);
         });
         for (var i = 0; i < rows; i++) {
             for (var j = 0; j < columns; j++) {
@@ -25170,7 +25170,7 @@ BI.HTapeLayout = BI.inherit(BI.Layout, {
         items = BI.compact(items);
         BI.each(items, function (i, item) {
             if (!self.hasWidget(self.getName() + i + "")) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 self.addWidget(self.getName() + i + "", w);
             } else {
                 w = self.getWidgetByName(self.getName() + i + "");
@@ -25275,7 +25275,7 @@ BI.VTapeLayout = BI.inherit(BI.Layout, {
         items = BI.compact(items);
         BI.each(items, function (i, item) {
             if (!self.hasWidget(self.getName() + i + "")) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 self.addWidget(self.getName() + i + "", w);
             } else {
                 w = self.getWidgetByName(self.getName() + i + "");
@@ -25771,12 +25771,12 @@ BI.CenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -25840,7 +25840,7 @@ BI.FloatCenterLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i) {
             var widget = BI.createWidget({
                 type: "bi.default"
-            }, this);
+            }, self);
             widget.element.addClass("center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")).css({
                 width: width + "%",
                 height: "100%"
@@ -25851,7 +25851,7 @@ BI.FloatCenterLayout = BI.inherit(BI.Layout, {
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -25908,7 +25908,7 @@ BI.HorizontalCenterLayout = BI.inherit(BI.Layout, {
     },
 
     stroke: function (items) {
-        var o = this.options;
+        var self = this, o = this.options;
         var list = [];
         BI.each(items, function (i) {
             list.push({
@@ -25917,12 +25917,12 @@ BI.HorizontalCenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -25989,12 +25989,12 @@ BI.VerticalCenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
@@ -27553,10 +27553,14 @@ Data.Source = BISource = {
 
     var _render = BI.Widget.prototype._render;
     BI.Widget.prototype._render = function () {
+        var needPop = false;
         if (window.Fix && this._store) {
+            needPop = true;
+            pushTarget(this.store);
             initWatch(this, this.watch);
         }
         _render.apply(this, arguments);
+        needPop && popTarget();
     };
 
     var unMount = BI.Widget.prototype.__d;
@@ -77799,9 +77803,6 @@ BI.IconTextTrigger = BI.inherit(BI.Trigger, {
             textAlign: "left",
             height: o.height,
             text: o.text,
-            title: function () {
-                return o.text;
-            },
             hgap: c.hgap
         });
         this.trigerButton = BI.createWidget({
diff --git a/dist/fix/fix.compact.js b/dist/fix/fix.compact.js
index ecb79592aa..03688192ab 100644
--- a/dist/fix/fix.compact.js
+++ b/dist/fix/fix.compact.js
@@ -116,10 +116,14 @@
 
     var _render = BI.Widget.prototype._render;
     BI.Widget.prototype._render = function () {
+        var needPop = false;
         if (window.Fix && this._store) {
+            needPop = true;
+            pushTarget(this.store);
             initWatch(this, this.watch);
         }
         _render.apply(this, arguments);
+        needPop && popTarget();
     };
 
     var unMount = BI.Widget.prototype.__d;
diff --git a/src/case/trigger/trigger.icon.text.js b/src/case/trigger/trigger.icon.text.js
index 8a65e7e3aa..c2805878a5 100644
--- a/src/case/trigger/trigger.icon.text.js
+++ b/src/case/trigger/trigger.icon.text.js
@@ -26,9 +26,6 @@ BI.IconTextTrigger = BI.inherit(BI.Trigger, {
             textAlign: "left",
             height: o.height,
             text: o.text,
-            title: function () {
-                return o.text;
-            },
             hgap: c.hgap
         });
         this.trigerButton = BI.createWidget({
diff --git a/src/core/wrapper/layout/layout.card.js b/src/core/wrapper/layout/layout.card.js
index cfcab22d0d..bdac5abce2 100644
--- a/src/core/wrapper/layout/layout.card.js
+++ b/src/core/wrapper/layout/layout.card.js
@@ -28,7 +28,7 @@ BI.CardLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i, item) {
             if (item) {
                 if (!self.hasWidget(item.cardName)) {
-                    var w = BI.createWidget(item, this);
+                    var w = BI.createWidget(item, self);
                     w.on(BI.Events.DESTROY, function () {
                         var index = BI.findIndex(o.items, function (i, tItem) {
                             return tItem.cardName == item.cardName;
diff --git a/src/core/wrapper/layout/layout.grid.js b/src/core/wrapper/layout/layout.grid.js
index 55c3cb88a8..80a976cecc 100644
--- a/src/core/wrapper/layout/layout.grid.js
+++ b/src/core/wrapper/layout/layout.grid.js
@@ -45,7 +45,7 @@ BI.GridLayout = BI.inherit(BI.Layout, {
     },
 
     stroke: function (items) {
-        var o = this.options;
+        var self = this, o = this.options;
         var rows = o.rows || o.items.length, columns = o.columns || ((o.items[0] && o.items[0].length) | 0);
         var width = 100 / columns, height = 100 / rows;
         var els = [];
@@ -92,11 +92,11 @@ BI.GridLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i, item) {
             if (BI.isArray(item)) {
                 BI.each(item, function (j, el) {
-                    els[i][j] = BI.createWidget(el, this);
+                    els[i][j] = BI.createWidget(el, self);
                 });
                 return;
             }
-            els[item.row][item.column] = BI.createWidget(item, this);
+            els[item.row][item.column] = BI.createWidget(item, self);
         });
         for (var i = 0; i < rows; i++) {
             for (var j = 0; j < columns; j++) {
diff --git a/src/core/wrapper/layout/layout.tape.js b/src/core/wrapper/layout/layout.tape.js
index 376d630296..ea24f8c826 100644
--- a/src/core/wrapper/layout/layout.tape.js
+++ b/src/core/wrapper/layout/layout.tape.js
@@ -47,7 +47,7 @@ BI.HTapeLayout = BI.inherit(BI.Layout, {
         items = BI.compact(items);
         BI.each(items, function (i, item) {
             if (!self.hasWidget(self.getName() + i + "")) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 self.addWidget(self.getName() + i + "", w);
             } else {
                 w = self.getWidgetByName(self.getName() + i + "");
@@ -152,7 +152,7 @@ BI.VTapeLayout = BI.inherit(BI.Layout, {
         items = BI.compact(items);
         BI.each(items, function (i, item) {
             if (!self.hasWidget(self.getName() + i + "")) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 self.addWidget(self.getName() + i + "", w);
             } else {
                 w = self.getWidgetByName(self.getName() + i + "");
diff --git a/src/core/wrapper/layout/middle/middle.center.js b/src/core/wrapper/layout/middle/middle.center.js
index 7bf5c86381..5545d7c41c 100644
--- a/src/core/wrapper/layout/middle/middle.center.js
+++ b/src/core/wrapper/layout/middle/middle.center.js
@@ -40,12 +40,12 @@ BI.CenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
diff --git a/src/core/wrapper/layout/middle/middle.float.center.js b/src/core/wrapper/layout/middle/middle.float.center.js
index aa1768fe54..ab9f0d6c25 100644
--- a/src/core/wrapper/layout/middle/middle.float.center.js
+++ b/src/core/wrapper/layout/middle/middle.float.center.js
@@ -35,7 +35,7 @@ BI.FloatCenterLayout = BI.inherit(BI.Layout, {
         BI.each(items, function (i) {
             var widget = BI.createWidget({
                 type: "bi.default"
-            }, this);
+            }, self);
             widget.element.addClass("center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")).css({
                 width: width + "%",
                 height: "100%"
@@ -46,7 +46,7 @@ BI.FloatCenterLayout = BI.inherit(BI.Layout, {
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
diff --git a/src/core/wrapper/layout/middle/middle.horizontal.js b/src/core/wrapper/layout/middle/middle.horizontal.js
index abd9f34d66..2cb37e7887 100644
--- a/src/core/wrapper/layout/middle/middle.horizontal.js
+++ b/src/core/wrapper/layout/middle/middle.horizontal.js
@@ -30,7 +30,7 @@ BI.HorizontalCenterLayout = BI.inherit(BI.Layout, {
     },
 
     stroke: function (items) {
-        var o = this.options;
+        var self = this, o = this.options;
         var list = [];
         BI.each(items, function (i) {
             list.push({
@@ -39,12 +39,12 @@ BI.HorizontalCenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,
diff --git a/src/core/wrapper/layout/middle/middle.vertical.js b/src/core/wrapper/layout/middle/middle.vertical.js
index 0b7302f581..9c59a251e3 100644
--- a/src/core/wrapper/layout/middle/middle.vertical.js
+++ b/src/core/wrapper/layout/middle/middle.vertical.js
@@ -39,12 +39,12 @@ BI.VerticalCenterLayout = BI.inherit(BI.Layout, {
                 el: BI.createWidget({
                     type: "bi.default",
                     cls: "center-element " + (i === 0 ? "first-element " : "") + (i === items.length - 1 ? "last-element" : "")
-                }, this)
+                }, self)
             });
         });
         BI.each(items, function (i, item) {
             if (item) {
-                var w = BI.createWidget(item, this);
+                var w = BI.createWidget(item, self);
                 w.element.css({
                     position: "absolute",
                     left: o.hgap + o.lgap,